反应详情

A mixture of N-(1-benzylpiperid-4-yl)-2-methoxy-4-acetamido-5-nitrobenzamide (4.26 g; 0.01 mol) [prepared by the procedure described in Example 1], concentrated hydrochloric acid (5 ml), methanol (40 ml) and water (40 ml) was boiled under reflux for 2 hours. The solvent was removed in vacuo and the solid recrystallized from ethanol to give 3.4 g of N-(1-benzylpiperid-4-yl)-2-methoxy-4-amino-5-nitrobenzamide hydrochloride, m.p. 218°-220° C. (dec).

1. customprepared by the procedure
2. temperatureunder reflux for 2 hours
3. customThe solvent was removed in vacuo
4. customthe solid recrystallized from ethanol